试题题干
WORD FORMATIONS
Complete the following sentence with the proper form of the word in the bracket.
(increase) His hot temper was making it 
difficult for others to work with him.
参考答案
试题解析
此处缺少副词。
句子主干完整。difficult是形容词，副词修饰形容词，所以空格处填副词较为合适。所以变increase为副词形式increasingly。
句意：他火爆的脾气导致别人很难跟他共事。